Branching time and Many-body Chaos
ORAL
Abstract
Branching time is defined in terms of the retarded kernel to quantify the stringy effects in SYK-like models. In this work, after presenting a weighting trick to calculate the branching time, we prove a bound on the branching time for a large class of systems. We also derive a relation between the branching time, the Lyapunov exponent and the quasiparticle lifetime for weakly coupling models.
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Presenters
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Pengfei Zhang
Caltech, Institute for Quantum Information and Matter, California Institute of Technology, Tsinghua University
Authors
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Yingfei Gu
Harvard University, Havard, Department of Physics, Harvard University
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Alexei Kitaev
Caltech, Physics, Caltech
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Hui Zhai
Tsinghua University, Institute for Advanced Study, Tsinghua University
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Pengfei Zhang
Caltech, Institute for Quantum Information and Matter, California Institute of Technology, Tsinghua University